skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Parton distributions with threshold resummation

Abstract

We construct a set of parton distribution functions (PDFs) in which fixed-order NLO and NNLO calculations are supplemented with soft-gluon (threshold) resummation up to NLL and NNLL accuracy respectively, suitable for use in conjunction with any QCD calculation in which threshold resummation is included at the level of partonic cross sections. These resummed PDF sets, based on the NNPDF3.0 analysis, are extracted from deep-inelastic scattering, Drell-Yan, and top quark pair production data, for which resummed calculations can be consistently used. We find that, close to threshold, the inclusion of resummed PDFs can partially compensate the enhancement in resummed matrix elements, leading to resummed hadronic cross-sections closer to the fixed-order calculations. On the other hand, far from threshold, resummed PDFs reduce to their fixed-order counterparts. Our results demonstrate the need for a consistent use of resummed PDFs in resummed calculations.

Authors:
 [1];  [2];  [1];  [1];  [3];  [4];  [5];  [6];  [7]
  1. Univ. of Oxford, Oxford (United Kingdom). Rudolf Peierls Centre for Theoretical Physics
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Center for Theoretical Physics
  3. Univ. of Cambridge, Cambridge (United Kingdom). Cavendish Lab.
  4. Univ. of Edinburgh, Scotland (United Kingdom). The Higgs Centre for Thoertical Physics; European Organization for Nuclear Research (CERN), Geneva (Switzerland). PH Dept.
  5. European Organization for Nuclear Research (CERN), Geneva (Switzerland). PH Dept.
  6. Univ. di Milano (Italy). Dipartimento di Fisica; Istituto Nazionale di Fisica Nucleare (INFN), Milano (Italy)
  7. Univ. of Oxford (United Kingdom). Rudolf Peierls Centre for Theoretical Physics
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Org.:
USDOE
OSTI Identifier:
1542096
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of High Energy Physics (Online)
Additional Journal Information:
Journal Volume: 2015; Journal Issue: 9; Journal ID: ISSN 1029-8479
Publisher:
Springer Berlin
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; Resummation; QCD; Deep Inelastic Scattering

Citation Formats

Bonvini, Marco, Marzani, Simone, Rojo, Juan, Rottoli, Luca, Ubiali, Maria, Ball, Richard D., Bertone, Valerio, Carrazza, Stefano, and Hartland, Nathan P. Parton distributions with threshold resummation. United States: N. p., 2015. Web. doi:10.1007/JHEP09(2015)191.
Bonvini, Marco, Marzani, Simone, Rojo, Juan, Rottoli, Luca, Ubiali, Maria, Ball, Richard D., Bertone, Valerio, Carrazza, Stefano, & Hartland, Nathan P. Parton distributions with threshold resummation. United States. doi:10.1007/JHEP09(2015)191.
Bonvini, Marco, Marzani, Simone, Rojo, Juan, Rottoli, Luca, Ubiali, Maria, Ball, Richard D., Bertone, Valerio, Carrazza, Stefano, and Hartland, Nathan P. Mon . "Parton distributions with threshold resummation". United States. doi:10.1007/JHEP09(2015)191. https://www.osti.gov/servlets/purl/1542096.
@article{osti_1542096,
title = {Parton distributions with threshold resummation},
author = {Bonvini, Marco and Marzani, Simone and Rojo, Juan and Rottoli, Luca and Ubiali, Maria and Ball, Richard D. and Bertone, Valerio and Carrazza, Stefano and Hartland, Nathan P.},
abstractNote = {We construct a set of parton distribution functions (PDFs) in which fixed-order NLO and NNLO calculations are supplemented with soft-gluon (threshold) resummation up to NLL and NNLL accuracy respectively, suitable for use in conjunction with any QCD calculation in which threshold resummation is included at the level of partonic cross sections. These resummed PDF sets, based on the NNPDF3.0 analysis, are extracted from deep-inelastic scattering, Drell-Yan, and top quark pair production data, for which resummed calculations can be consistently used. We find that, close to threshold, the inclusion of resummed PDFs can partially compensate the enhancement in resummed matrix elements, leading to resummed hadronic cross-sections closer to the fixed-order calculations. On the other hand, far from threshold, resummed PDFs reduce to their fixed-order counterparts. Our results demonstrate the need for a consistent use of resummed PDFs in resummed calculations.},
doi = {10.1007/JHEP09(2015)191},
journal = {Journal of High Energy Physics (Online)},
issn = {1029-8479},
number = 9,
volume = 2015,
place = {United States},
year = {2015},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share: